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- Title
Comparative Study of Ammunition Wastewater Pretreatment by Fe/Cu/Air and Fe<sup>0</sup>/Air Processes.
- Authors
Yue Yuan; Bo Lai; Yunyi Tang; Ping Yang; Yuexi Zhou
- Abstract
Fe/Cu bimetallic particles have been proposed as a viable technology for reduction of nitroaromatic pollutants from aqueous solution; however, little data are currently available on its applicability in actual ammunition wastewater. In this study, prepared microsized Fe/Cu bimetallic particles were used to pretreat toxic and refractory ammunition wastewater under oxic conditions. Four key operational parameters, including initial pH (2.0-7.5), aeration rate (0-2.0 L/min), Fe/Cu dosage (5-40 g/L), and reaction time (0-120 min), were optimized, respectively. Furthermore, a Fe0/air process as the control experiment of Fe/Cu/air process was set up under optimal conditions. According to results of COD removal, decoloration, and B/C ratio, the Fe/Cu/air process had a higher treatment efficiency for ammunition wastewater compared with Fe0/air process due to the high reactive Fe/Cu bimetallic particles. Finally, analysis of UV-vis, excitation and emission matrix, and fourier transform infrared reveals that the toxic and refractory pollutants in ammunition wastewater could be decomposed effectively by the Fe/Cu/air process, and they also confirmed the superiority of Fe/Cu/air process. Gas chromatography mass spectrometry (GC-MS) suggests that all nitro-aromatic pollutants in ammunition wastewater were removed completely.
- Subjects
WASTEWATER treatment; AMMUNITION; ULTRAVIOLET treatment (Sewage purification); BIMETALLIC catalysts; GAS chromatography/Mass spectrometry (GC-MS)
- Publication
Environmental Engineering Science, 2017, Vol 34, Issue 3, p197
- ISSN
1092-8758
- Publication type
Article
- DOI
10.1089/ees.2016.0097